You make the same error as those who advocate writing
computer programs in ordinary English. You need lawyers
to handle lawsuits like you need programmers to write
programs, because in each case experience and expertise
are required to achieve good results. It is not possible
for someone without legal training to even know what sort
of complaints and defenses are even legitimate. The result
would be similar to when a non-programmer specifies "make
it do this when that happens", namely no recognition of
all the other states and corner cases which must be
considered.
In any case, if such a process is wanted by both sides,
they can (and do) go to arbitration instead of court.